102100112030221 has 2 divisors, whose sum is σ = 102100112030222. Its totient is φ = 102100112030220.

The previous prime is 102100112030177. The next prime is 102100112030233. The reversal of 102100112030221 is 122030211001201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96230704575625 + 5869407454596 = 9809725^2 + 2422686^2 .

It is a cyclic number.

It is not a de Polignac number, because 102100112030221 - 2²⁷ = 102099977812493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102100112030195 and 102100112030204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102100112030291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050056015110 + 51050056015111.

It is an arithmetic number, because the mean of its divisors is an integer number (51050056015111).

Almost surely, 2^{102100112030221} is an apocalyptic number.

It is an amenable number.

102100112030221 is a deficient number, since it is larger than the sum of its proper divisors (1).

102100112030221 is an equidigital number, since it uses as much as digits as its factorization.

102100112030221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 102100112030221 its reverse (122030211001201), we get a palindrome (224130323031422).

The spelling of 102100112030221 in words is "one hundred two trillion, one hundred billion, one hundred twelve million, thirty thousand, two hundred twenty-one".